std::ranges::greater_equal - cppreference.com (original) (raw)
| | | | | ---------------------- | | ------------- | | struct greater_equal; | | (since C++20) |
Function object for performing comparisons. Deduces the parameter types of the function call operator from the arguments (but not the return type).
Contents
[edit] Nested types
[edit] Member functions
| | checks if the first argument is greater than or equal to the second (public member function) | | --------------------------------------------------------------------------------------------------- |
[edit] Notes
Unlike std::greater_equal, std::ranges::greater_equal
requires all six comparison operators <
, <=
, >
, >=
, ==
and !=
to be valid (via the totally_ordered_with constraint) and is entirely defined in terms of std::ranges::less.
[edit] Example
[edit] Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
DR | Applied to | Behavior as published | Correct behavior |
---|---|---|---|
LWG 3530 | C++20 | syntactic checks were relaxed while comparing pointers | only semantic requirements are relaxed |